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[Eric Williams <820327@xxxxxxxxxxxxxxxxxx>]

Hi,

More information about this issue:

- still happening on an up-to-date Natty

- Problem *does not occur* if gnome-display-properties is running at the
time

- The exact symptoms have changed a little, but still shows the same
inability to properly set the external monitor

- With gnome-display-properties running, cycling through modes with
Fn+F7 looks like this (in order):

Mode                    Internal        External
------------------------------------------------
Spanning Desktop        On              On
Clone Mode              On              Broken
Internal Only           On              Off
External Only           Off             On
Spanning (again)        On              Broken

If gnome-display-properties is running, it works properly:

Mode                    Internal        External
------------------------------------------------
Spanning Desktop        On              On
Clone Mode              On              On
Internal Only           On              Off
External Only           Off             On
Spanning (again)        On              on

This is on a projector, which doesn't support many modes, so "broken" is
basically "black".

When run on a fairly flexible external monitor, I noticed that the
resolution/refresh as reported by xrandr does not match the actual
resolution of the monitor. In the attached photo, you'll see output of
xrandr (white on black) saying the monitor is 1920x1200@60Hz, but the
monitor's status menu says it's running 1600x1200@60Hz.

The GNOME desktop believes that the monitor is 1920 pixels wide, so even
though there's a picture on the monitor, much of it is missing.

Thanks,
Eric

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-settings-daemon in Ubuntu.
https://bugs.launchpad.net/bugs/820327

Title:
  Fn+F7 cycling gives external monitor incorrect resolution on Thinkpad
  x220

Status in “gnome-settings-daemon” package in Ubuntu:
  Confirmed

Bug description:
  ## Issue

  Pressing Fn+F7 to cycle through monitor configuration produces
  unusable monitor configuration on external-monitor-only mode.

  External monitor is set to incorrect resolution when it's the only
  active display.

  xrandr output does not match resolution of external display that is
  actually set.  E.g., xrandr shows "1920x1080@60Hz",  but monitor
  status menu shows 1360 x 768 @ 60Hz, which it does not support.

  ## Environment

  - Thinkpad X220 (T61 also fails)

  -  External monitor attached

  ## Steps to reproduce:

  - connect external monitor to ThinkPad X220 (or X61)

  - press Fn+F7 to cycle through modes

  - on External Monitor Only mode, compare resolution of external
  monitor as reported by xrandr and the monitor itself.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: gnome-settings-daemon 2.32.1-0ubuntu13.1
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic i686
  Architecture: i386
  Date: Wed Aug  3 11:59:12 2011
  LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
  ProcEnviron:
   LANGUAGE=en_US:en
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-settings-daemon
  UpgradeStatus: No upgrade log present (probably fresh install)

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